ESD Plastic FAQ

FAQ

Sample weight less than 3KG free, freight borne by the buyer

Typically 3 days for sample and 7 days lead time for 1 FCL.

We can match color according to Color Card – Pantone or RAL

The validity of ESD antistatic additives is a more complex issue, which is affected by many factors.

First, the type and quality of antistatic additives will significantly affect their validity. Some high-quality and high-performance antistatic materials may maintain good antistatic performance for a long time; while the antistatic effect of materials with poor quality or poor design may decline quickly. Antistatic additives can be divided into permanent antistatic additives and temporary antistatic additives according to their validity. Permanent antistatic additives form a network structure with the base material, relying on the ionic groups on the molecular chain to conduct and dissipate static electricity. Its working principle has nothing to do with air humidity, so the antistatic effect is very stable and has a long-lasting performance. The working principle of a temporary antistatic additive is mainly that its molecules precipitate on the surface of the product, absorb moisture in the air to form a water film and achieve the antistatic effect. This type of material is very sensitive to moisture, and the antistatic effect is easily weakened or even disappears below 50% humidity, and the validity is relatively short. Small molecule antistatic additives belong to this category of temporary antistatic types. Permanent antistatic agents are more popular in industrial applications due to their stable antistatic effect and long service life.

INCHR has been focusing on permanent antistatic additives and permanent antistatic compounds, which we also call polymer antistatic materials, mainly used in semiconductor packaging materials, such as injection molding, blister sheets, high-end film, and foaming materials. These plastic products all require long-term and stable antistatic properties. 

The validity of permanent antistatic additives is affected by ambient humidity, temperature, and compatibility with resins.

Ambient humidity: Humidity is one of the important factors affecting the effect of antistatic additives. Water has a certain conductivity and can improve the surface conductivity of materials. When there is a certain amount of moisture on the surface of the material, even under certain humidity conditions, insulating materials will show a certain surface conductivity. The hydrophilic groups in the antistatic agent form hydrogen bonds with water molecules in the air, promoting the transfer of charges, and thereby achieving better antistatic effects. Therefore, the higher the ambient humidity, the better the antistatic effect.

Ambient temperature: Temperature also affects the effect of antistatic additives, but the specific mechanism of influence is not clearly stated in the information provided. Generally speaking, temperature affects the physical state and chemical reaction rate of the material, thereby indirectly affecting the effectiveness of the antistatic performance.

Compatibility with resin: The compatibility of antistatic additive with resin is one of the main factors that determine its morphological structure. Poor compatibility will affect the mechanical properties of antistatic materials, the appearance and performance of products, and the durability of antistatic effects.

The frequency and intensity of the use of antistatic materials will also affect the validity period. Frequent and high-intensity friction, contact, and other operations may accelerate the weakening of antistatic performance. Under different conditions of use, its validity is also different. In actual cases, it is necessary to select appropriate antistatic additives and substrates according to specific circumstances and evaluate their performance to meet the timeliness of antistatic performance.

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